Alphamethrin-impregnated bed nets for malaria and mosquito control in China.

Abstract:

:A community-based intervention trial was carried out to evaluate the effectiveness of alphamethrin-impregnated bed nets for control of Plasmodium vivax malaria and its vector in an area of moderate endemicity in southern Henan province, central China in 1990. Malaria incidence was significantly lower in the intervention group than in the comparison group (2.03 vs. 3.57 per 100 person-years at risk). The protective efficacy for malaria incidence was 43%. The prevalence of malaria parasitaemia among children under 10 years old in the intervention group was about one-quarter of that in the comparison group (0.93% vs. 3.25% and 0.71% vs. 1.96% after one and 4 months use of impregnated nets, respectively). Alphamethrin-impregnated bed nets had a mass killing effect on vector mosquitoes. The outdoor person-biting density of Anopheles anthropophagus and A. sinensis decreased by 70.3% and 29.3% respectively. The density of these 2 mosquito species found resting inside treated nets was close to zero. No side effect was found among users of impregnated bed nets. Impregnation with alphamethrin was more effective on polyester than on cotton netting and residual effects lasted at least one year. Use of alphamethrin is less expensive than permethrin and deltamethrin.

authors

Luo D,Lu D,Yao R,Li P,Huo X,Li A,Wen L,Ge C,Zhang S,Huo H

doi

10.1016/0035-9203(94)90199-6

subject

Has Abstract,Author List Incomplete

pub_date

1994-11-01 00:00:00

pages

625-8

issue

6

eissn

0035-9203

issn

1878-3503

journal_volume

88

pub_type

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